This is the right side of the QSL card from the Viking Mars Landing. This image shows the project logo. Viking 1 arrived in Mars orbit on June 19, 1976. Viking 2 arrived in Mars orbit on August 7, 1976.
This is the left side of the same QSL card showing an artists rendition of the lander capsule separation. The callsign N6V was issued to the JPL Amateur Radio club by the FCC for use during operation of the special event station. It is one of only two one-by-one callsigns ever issued by the FCC prior to 1997.
The Viking mission profile, description, and contact information is printed on the rear side of the N6V QSL card. The upper image is on the left side facing the lower image.
Go here for the NASA detailed description of the Viking Project, photographs of Mars and other interesting facts. Then check out the N6V special event recap in the December, 1976, issue of “W6VIO Calling.”
If you are a Slow Scan TV buff you can access MP3 copies of two sides of the special JPL ARC Viking SSTV cassette recording here.. It was narration by Stan Brokl (K6YYQ) and Jim Lumsden (WA6MYJ).